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Name one piece of apparatus that is not used in a simple distillation but is used in a fractional distillation.
Problem- The toxic gas phosgene decomposes to a limited extent to carbon monoxide and chlorine at 373 K according to the following equation: COCl2(g) ----> CO(g) + Cl2(g) The equilibrium constant, Kc, is 2.2 x 10-9 at this temperature. If a 1.00 L..
Question- Which of the following ''family'' of phosphate species is least likely to be present in your soda sample. Explain your choice. H3PO4 , H2PO4^- , HPO4^2, PO4^3
Calculate the pH of the buffer that is produced when 5.00 grams of boric acid (HBH2O3 molecular weight =61.84g/mol, Ka = 5.83x10-10) is added to 250. ml of 0.100 M NaOH.
Calculate the pH and the concentration of the other species in a 0.0200-M aqueous solution of C6H5COOH (aq)
Using given data, calculate the change in Gibbs free energy for each of the following reactions. In each case indicate whether the reaction is spontaneous at 298 K
question technetium-99 is widely used to diagnosis in medicine. its half-life is 6.02 hours. a sample prepared in the
Which of the following combinations of quantum numbers are allowed? A) n=4, I=2, mi=1, ms= -1/2 B) n=2, I=2, mi=2, ms= 1/2 C) n=1, I=0, mi=1, ms= 1/2 D) n=4, I=1, mi=1, ms = 1/2
For each of the following cases, identify the order with respect to the reactant, A. Case (A ----> product) 1. The half-life of A increases as the initial concentration of A decreases
What is the molarity of hydrogen ion in the above sulfuric acid solution if you assume the sulfuric acid ionizes completely? the above sulfuric acid solution is 0.07 M.
If 25.0 mL of 0.451 M HNO3 solution is titrated with 0.451 M NaOH, Calculate the pH of the solution after each of the following amounts of base have been added. Set up the relevant neutralization reaction equations for each part.
flask apparatus, which now contains 2.00 L H2 at a pressure of 360 torr and 1.00 L N2 at an unknown pressure. if the total pressure in the flasks is 320 torr after the stopcock is opened, determine the initial pressure of N2 in the 1.00-L flask.
In water, every sulfuric acid molecule transfers H+ to water and becomes an HSO4 - ion. Some HSO4 - ions give off another H+ to form SO4 -2 ions. Which statement is true?
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